Oscillatory magnetic motor



Aug. 25, 1936. J. NQFREY 2,051,992

OSCILLATORY MAGNETIC MOTOR Filed Sept. 2l, 1955 2 Sheecs-SheeI l INVENTOR. JOHN NELSoN PREY ATTORNEYS J. N. FREY Aug. 25, 1936.

Filed Sept. 21, 1935 2 Sheets-Sheet 2 INVENTOR. JOHN NELSQNFREY A I ORNEYS Patented Aug'. 25, 1936 UNITED STATES 2'519 9 2 a n OSCILLATORY MAGNETIC MOTOR John Nelson Frey, Union,

N. J., assi'gnor to The vUnited States Printing & v,Lithograph Company,V NewYork, N.'Y., a corporation of Ohio Application September 21, 1935, Serial No. 41,622

, 5 claims.' (o1. 40.-51)

This invention relates to improvements in oscillatory magnetic motors and has more part1cular relation to improvements in motors designed for use in connection with movable displays for.'

advertising purposes.

The invention consists of a motor designed for continuous movement to operate some movable part of an advertising display by a very low voltage current, such for instance, as may be supplied by dry cells or storage battery of very low voltage to avoid all rlre hazards. A Y

'Ihe invention consists in a motor so designed and mounted that it may be instantly attached or removed from the display panel of an advertising device; said panels being constructed to be placed in display windows in an approximately upright position.

The invention is anV improvement on the co G. Ruckelshaus, No.Y

pending application of John 30,952 led July 12, 1935.

In devices of the present type, the oscillating motor on the back of the display communicates an oscillating movement to some part movingover the face or front of the display. The in- Vention, therefore, consists of means for securing or detaching the motor to the back of the display in such a manner that it may be instantly re: moved from the display notwithstanding the con-`A nections are projecting through narrow slots of` the display.

In the accompanying drawings, formingpart of this specication element being shown in dotted lines.

Figure 2 represents an end elevation of the same.

lFigure 3 represents the cardboard attaching block for securing the motor to the back of the display. f

Figure 4 relriresenvtsV a horizontal section through thesame.

Figure 5 represents a modied form of attaching block for the motor constructed of metal.

Figure 6 represents a section through the same on the line 6 6 of Figure 5.

Figure 7 represents the attaching block that is detachably secured to the motor and supports the movable display.

Figure `8 represents a horizontal section through the same.

Figure 9 represents a detail side elevation of the electric switch just after it has made contact, and

Figure l0 represents a similar view with thev switch being reset to contact position.

Described in general terms, the motor which is shown in the aforesaid pending application com-v prises a yoke 2 to which is attached a curved soft 5 iron bar 3. This bar is preferably spot welded to the bottom of the'yoke. The upper end of the lyoke'2 supports a trunnion 4 on which is rigidly mounted the main oscillating bar 5 of the motor.

The lower end of the bar 5 supports a bobbin 10 or solenoid coil 6. This coil as best shown in Figure 2 has one end of its winding 'I grounded on the frame while the companion wire 8 of the coil is connected to the Contact I4 of the switch which is mounted in a rigid arm by suitable insulated mountings. The coil 6 as itY swings back and forth like a pendulum is soarranged that it `swings over the iron bar 3 and the solenoid is given a momentary impulse and then released tocause the bar 5 to continue an oscillating movement.

VThe lower end of this bar is provided with a counterebalancing arm II having a counter weight I2. The purpose of this latter bar and arm is" to form, together with the coil, a counter- 25 weight to counter-poise the weight of the arm I3 which is to travel over the face of the display and which 'is mounted upon the upper end of the bar 5. The switch is so arranged that the contact' Y pin 9 contacts the arm I4 upon the forward swin g of the bar." As the pin 9 continues its forwardv 30 movement it moves the pivoted switch plate I5 so that the'pin willno't contact'the contact I4 on'the backswing of the bar. This back swing, however, again moves the switch plate I5 to bring the contact VI4 into the .path of the pin 9 for vthe 35 succeeding operation, this latter condition being shown in Figure 10.

; In displays of the present type which are placed in the hands of users in great numbers, a large 40 percentage of the cost of producing such displays is the rnotor mechanism.' For this reason, it is very desirable that such'motor mechanism be so arrangedthat itmay be vattached to diierent displays having lithographed front panels il- 45 lustrating different moving parts of diierent motivated pictures. For this reason, the motor, instead of being permanently attached to the back of the display, is simply slid into place in the following manner. One arm of the yoke 2 is provided with a pendent segmental plate I6, the segment of this plate being struck on an arc which is centered on the trunnion 4. The n cardboard block I 1 for supporting the arm I 6 and the yoke 2 is glued or otherwise secured to the back 55 I0 secured to the yoke, 15

of the display I in such position that when the parts are in place as shown in Figure 1, the arm 6 may be disengaged from the segmental socket I8 by rotating the yoke 2 on the trunnion 4 without moving the oscillatory bar 5. The block Il is made up of two thicknesses of cardboard I9 and 20. 'Ihe slot I8 formed in the part I9 is closed on one side by the solid portion of the underlying part 2U so as to form a segmental slot for the reception of the arm I6, the opposite side of the slot I8 being formed by the back of the display against which the part I9 is glued. A'

slot 2l is formed in the part 20 so thatthe upper end of the arm I6 will project into the samev to assist in firmly anchoring the yokel 2 in position; one arm of the lower edge of the yoke resting upon the upper edge 22 of the part I9. The part 20 is also provided with a flexible locking tongue 2.3 which snaps over the yoke 2 after the parts are in position to prevent the yoke from rising from its seat at any time during the oscillation of the motor. If it is desiredat any time to remove the motor, the tongue 23 is bent back to release the bottom of the yoke so that it may be moved upward on the pivot. 4 and allow the segment IB to be drawn out of the slot I8. After this movement has taken place and after the movable part of the display on the upper end of the bar has been removed, this latter bar may be slightly ,tipped and the whole motor removed from the display by withdrawing the bar 5 through a slot 24v formed in the display. The portion of the display I3, which in the present instance is the representation of an arm with a hand, is attached to .the upper and outwardly bent end 25 of the bar 5 by means of the cardboard block 26 shown in Figure 7. This block is also made of two thicknesses of cardboard with a slot 21 in the uppermost. This block 26 is suitably glued to the-upper v enduof the arm I3 thereby forming the socket 21 which receives the end of the bar 5.

It will be seen from the above that the arm I3 can be instantly removed by being forced upward. 'Ihis operation leaves the bar 5 free to be Withdrawn through the slot 2l.

It will be seen from the above that if the user of motivated displays has several such displays, he may move the motor from one display to another without any more effort than moving the parts from the slots shown in the blocks illustrated in Figures 3 and '7. In other words no mechanical adjustments or detachments are necessary and the motor parts are simply slipped out and intoslots in making the transfer.

It has also been found that any vibration set up in `the moving part of the motor and communicated to the yoke' 2 will be best resisted by the segmental formof the arn'i I6 in its slot I8. This structure forms a lock against the outward .movement ofthe yoke in addition to the lock afforded by the tongue 23.

It has been found desirable in very large displays in which the size'and weight ofthe motor must be increased to provide metallic attaching devices for the motor. These are best shown in Figure 5 in which a single plate 28 is stamped with a segmental channel 29 and an oiset plate 30 having a notch 3l corresponding to the notch 2I. A exible tongue 32 is also formed on this metal plate corresponding to the tongue 23. The plate 33 by being offset from the plate 28 forms a shoulder 34 corresponding to the shoulder 22 and for like purpose. The plate 28 in this instance is formed with apertures 35 through which bolts or screws are passed to secure the plate to the back of the display.

I claim:

1.,'Ihecombination with an advertising display, of an oscillatory motor having a supporting member and a pivoted actuator on said member, a movable display member, means connecting the latter member to the actuator, and detachable holding means between the supporting member and the display movable upon an arc with theactuator pivot as a centre.

2. The combination Ywith an advertising display, of an oscillatory motor, having a supporting member and a pendulum actuator pivoted on said member, a movable display member on the front of the display, means connecting the actuator and display member and passing through the display, and detachable holding means between the supporting member and the display capable of detachment without moving the pendulum actuator.

3. The combination with an advertising displaylv of an oscillatory motor arranged to be detachably secured to the back of the display and comprising a supporting member, a pendulum acting actuator pivotally supported on said member, an arc-shaped attaching arm struck on an arc whose centre is the actuator pivot, an attaching block secured to the back of the display and having a slot to receive the arc-shaped arm of the supporting member, a movable device for thefrontof the display and means connecting said device to the pendulum actuator.

4. The combination with an advertising display, of an oscillatory motor having a supporting member and a pivoted actuator on said member,

a movable display member, means connecting the latter member to the actuator, a segmental arm mounted on the supporting member, ablock having a. segmental slot to receive the arm and mounted on the display and locking means for securing the arm within. the slot against accidental displacement..

l5. The combination with an advertising vdisplay, of an oscillatory motor vhaving a supporting member and aA pivoted actuator on said member, a movable display member, detachable means connecting the latter member to the actuator and detachable holding means between the supporting member and the display.

JOHN NELSON FREY. 

